Noem said the ICE officer, who has been identified as Jonathan Ross, feared for his life and those of the officers and members of the public around him. Noem said the officer fired "defensive shots" and "used his training to save his own life and that of his colleagues."

The recent shooting by a federal ICE officer in Minneapolis has sparked legal questions on the use of deadly force, self-defense, and federal immunity. Here's how one legal expert breaks it down.